Nurses and other healthcare professionals may need to provide additional support to informal caregivers before and after discharging older people with significant care needs from hospital. This might include person-centred information, education and training.

The inclusion of family members in the acute care of older persons with complex needs results in better coordination of care and reduces the frequency and/or duration of rehospitalisation. Therefore, healthcare professionals need a tool to assess the collaboration with family members on acute hospital wards. The aims were to test the psychometric properties of the Swedish version of the Family Collaboration Scale (FCS), to investigate family members’ perception of collaboration with healthcare professionals on acute medical wards in Sweden and to compare the data with the corresponding Danish results. Three hundred and sixty family members of frail patients aged 65 or older from 13 acute medical wards answered the FCS questionnaire. In addition to descriptive statistics, psychometric methods were applied. The internal consistency of the Swedish version of the FCS was excellent, and confirmatory factor analysis revealed that its factor structure was equivalent to that of the original Danish FCS. The respondents’ ratings indicated better perceived collaboration than in the Danish case. Older age than 60 was associated with worse collaboration with healthcare professionals regarding Influence on discharge than younger respondents. Those with compulsory and health or nursing education showed better collaboration. The Swedish version of the FCS should be further evaluated for its retest reliability and as an outcome measure in intervention studies.